sediment yield

sediment yield

[′sed·ə·mənt ‚yēld]
(geology)
The amount of material eroded from the land surface by runoff and delivered to a stream system.
References in periodicals archive ?
The investment made for reducing sediment yield in this small catchment area does not make it a viable project like at Mangla where almost all catchment area is favourable for watershed checks and interventions.
Sediment yield in northern and southern part is controlled mainly by amount of episodic discharge from temporarily active wadis and the bioproductivity, whereas, in central part, anthropogenic activity prevails the sediment input.
Turbidimetric sediment yield values (PSTurb.) in SHB 140 were extremely higher than that found in SHB 80, corresponding to 86.78% in 2010, 85.07% in 2011 and 86.79% in 2012.
Attribution of Changes in Sediment Yield. The hydrological modeling method was employed to estimate the attribution of precipitation and other factors to the changes in sediment yield in the HLR since 1980.
The average annual SSD before the 2009 Typhoon Morakot in the Zhuoshui River was 96.0 Mt/yr, and the average sediment yield in the unit catchment area was 33,035 t/[km.sup.2]/yr.
Along with rainfall simulations and runoff collection, plot characteristics in terms of sediment yield, initial soil moisture content (SC %), vegetation (VC %) and litter cover (LC %), runoff initiation time (RIT) and infiltration rate (RIT) were also recorded.
How to evaluate the influence of water resource exploitation on surface runoff and sediment yield and predict the tendency of hydrological variation have been a significant issue [1].
Almost of the sediment yield introduced into the dams was due the flood of February (75-83 %), and about half the deposed sediment in the dams through the flood event was trapped, that is equivalent to about 50,000151,000 tons depending on the dam.
The 34 papers, selected from more than 80 submissions, consider such topics as the sliding wear behavior of AM60 alloy with alloyed lanthanum and cerium mixed rare earths, improving the mechanical properties of fluorine rubber with carbon fiber reinforcement, metabolic behavior based on optimizing resource utilization for iron and steel production, characteristics of runoff and sediment yield from purple soil on sloping land under different rainfall intensities, temporal and spatial changes in Lake Luoma's water quality using multivariate analysis, and a critical evaluation of renewable energy technologies for desalination.
However, the annual loss rates in Southeast Asia and Japan are only 0.3% and 0.15% respectively due to relatively low sediment yield and the high forest cover [5].
Roads concentrate runoff, critical for enhancing increased hill-slope soil loss and sediment yield which later impairs the quality of surrounding open waterbodies (Forsyth et al., 2006; Lane and Sheridan, 2002; Ramos-Scharron and Macdonald, 2007; Sheridan and Noske, 2007).
Consequently, afforestation practices may have had significant effects on a variety of environmental aspects such as landscape structure, soil properties and water and sediment yield.To address this problem, an interdisciplinary approach is proposed for understanding the global effect of afforestation on landscape structure, soil properties and carbon sequestration, and hydrological and geomorphological dynamics.